So I love my 73 280c m110 and all. But driving before it's fully warmed up is not super fun. If i hit the gas to merge into traffic, the opposite happens, it bogs down, feels like it misses a firing, bogs down, and i have to feather in the gas slowly to get back up to speed. Once i get it warm it's perfect.

But recently I saw this in my hagerty magazine. An article about how we love our classics, but let's face it, there are so many improvements in modern EFI engines. Spoiled by starting up right away, no cranking, take off cold, get good performance and they basically just sip gas. Of course ours are the opposite of all those things, and that's why we love em right?

So anyway, they posted a video (very cool) of a holley EFI conversion. I wanted to share it with you guys. I think you'd enjoy it.

I kind of feel like I am leaving a lot of power / economy / cold start get up and go on the table, and i'm not too much of a tuner, so there's something appealing about this. I have heard you guys mention "mega squirt" but don't know what that even is, and also some of you may have carb upgrade recommendations. (?)

Just knowing that the carbed m110 gives about 130 HP vs the k-jet euro providing about 185 HP, it does seem like there are huge losses with the carbs. But there may be more to it, like compression numbers. It might sound a bit more complex, but simply swapping over to a k-jet m110 that regularly provides over 20mpg might be worthwhile. They are fairly available too. I don't know the cost of the holly kit, but it does look appealing.

Just knowing that the carbed m110 gives about 130 HP vs the k-jet euro providing about 185 HP, it does seem like there are huge losses with the carbs. But there may be more to it, like compression numbers. It might sound a bit more complex, but simply swapping over to a k-jet m110 that regularly provides over 20mpg might be worthwhile. They are fairly available too. I don't know the cost of the holly kit, but it does look appealing.

Hmm.. If they are fairly available, *and* you happen to know of one, give me a call. I'm all ears
Tom

I second the notion of a megasquirt, but that presupposes the installer has some minor skills in fabrication and that someone else in the past has done it (and can offer advice). There's a VERY long thread on converting the 4.5 to megasquirt, but I've never seen one for the 6 cylinder'd ones.

I'm of the opinion that the carbs aren't set up correctly, or you have another issue effecting it. When the things were new, they weren't known for the issues you describe ...

It's by far cheaper to solve the carb issues than doing an engine swap or EFI.

(Because I am foolish, and just like complex things, I would do the EFI. I have a CIS 914 that is converted to Megasquirt and a W110 with C230 engine converted to Megasquirt. That doesn't mean its the smart thing to do! )

I second the notion of a megasquirt, but that presupposes the installer has some minor skills in fabrication and that someone else in the past has done it (and can offer advice). There's a VERY long thread on converting the 4.5 to megasquirt, but I've never seen one for the 6 cylinder'd ones.

I'm of the opinion that the carbs aren't set up correctly, or you have another issue effecting it. When the things were new, they weren't known for the issues you describe ...

User Pex did a conversion on a k-jet m110 280sl and documented a lot of it in the 107 forum.